<template>
  <a-input
    disabled
    :style="{ width }"
    :placeholder="t('component.icon.placeholder')"
    :class="prefixCls"
    v-model:value="currentSelect"
  >
    <template #addonAfter>
      <a-popover
        placement="bottomLeft"
        trigger="click"
        v-model="visible"
        :overlayClassName="`${prefixCls}-popover`"
      >
        <template #title>
          <div class="flex justify-between">
            <a-input
              :placeholder="t('component.icon.search')"
              @change="debounceHandleSearchChange"
              allowClear
            />
          </div>
        </template>

        <template #content>
          <div v-if="getPaginationList.length">
            <ScrollContainer class="border border-solid border-t-0">
              <ul class="flex flex-wrap px-2">
                <li
                  v-for="icon in getPaginationList"
                  :key="icon"
                  :class="currentSelect === icon ? 'border border-primary' : ''"
                  class="p-2 w-1/8 cursor-pointer mr-1 mt-1 flex justify-center items-center border border-solid hover:border-primary"
                  @click="handleClick(icon)"
                  :title="icon"
                >
                  <!-- <Icon :icon="icon" :prefix="prefix" /> -->
                  <SvgIcon v-if="isSvgMode" :name="icon" />
                  <Icon :icon="icon" v-else />
                </li>
              </ul>
            </ScrollContainer>
            <div
              class="flex py-2 items-center justify-center"
              v-if="getTotal >= pageSize"
            >
              <a-pagination
                showLessItems
                size="small"
                :pageSize="pageSize"
                :total="getTotal"
                @change="handlePageChange"
              />
            </div>
          </div>
          <template v-else
            ><div class="p-5"><a-empty /></div>
          </template>
        </template>

        <span
          class="cursor-pointer px-2 py-1 flex items-center"
          v-if="isSvgMode && currentSelect"
        >
          <SvgIcon :name="currentSelect" />
        </span>
        <Icon
          :icon="currentSelect || 'ion:apps-outline'"
          class="cursor-pointer px-2 py-1"
          v-else
        />
      </a-popover>
    </template>
  </a-input>
</template>
<script lang="ts" setup>
import { ref, watchEffect, watch, unref } from 'vue'
import { useDesign } from '@/hooks/web/useDesign'
import { ScrollContainer } from '@/components/Container'
import { Input, Popover, Pagination, Empty } from 'ant-design-vue'
import Icon from './Icon.vue'
import SvgIcon from './SvgIcon.vue'
import iconsData from '../data/icons.data'
import { usePagination, useDebounceFn } from '@admin/use'
import { useI18n } from '@admin/locale'
import { useCopyToClipboard } from '@/hooks/web/useCopyToClipboard'
import { useMessage } from '@/hooks/web/useMessage'
import svgIcons from 'virtual:svg-icons-names'

// 没有使用别名引入，是因为WebStorm当前版本还不能正确识别，会报unused警告
const AInput = Input
const APopover = Popover
const APagination = Pagination
const AEmpty = Empty

function getIcons() {
  const data = iconsData as any
  const prefix: string = data?.prefix ?? ''
  let result: string[] = []
  if (prefix) {
    result = (data?.icons ?? []).map((item) => `${prefix}:${item}`)
  } else if (Array.isArray(iconsData)) {
    result = iconsData as string[]
  }
  return result
}

function getSvgIcons() {
  return svgIcons.map((icon) => icon.replace('icon-', ''))
}

const props = defineProps({
  value: { type: String },
  width: { type: String, default: '100%' },
  pageSize: { type: Number, default: 140 },
  copy: { type: Boolean },
  mode: {
    type: String,
    default: 'iconify',
    validator: (v: string) => ['svg', 'iconify'].includes(v),
  },
})

const emit = defineEmits(['change', 'update:value'])

const isSvgMode = props.mode === 'svg'
const icons = isSvgMode ? getSvgIcons() : getIcons()

const currentSelect = ref('')
const visible = ref(false)
const currentList = ref(icons)

const { t } = useI18n()
const { prefixCls } = useDesign('icon-picker')

const debounceHandleSearchChange = useDebounceFn(handleSearchChange, 100)
const { clipboardRef, isSuccessRef } = useCopyToClipboard(props.value)
const { createMessage } = useMessage()

const { getPaginationList, getTotal, setCurrentPage } = usePagination(
  currentList,
  props.pageSize,
)

watchEffect(() => {
  currentSelect.value = props.value
})

watch(
  () => currentSelect.value,
  (v) => {
    emit('update:value', v)
    return emit('change', v)
  },
)

function handlePageChange(page: number) {
  setCurrentPage(page)
}

function handleClick(icon: string) {
  currentSelect.value = icon
  if (props.copy) {
    clipboardRef.value = icon
    if (unref(isSuccessRef)) {
      createMessage.success(t('component.icon.copy'))
    }
  }
}

function handleSearchChange(e: ChangeEvent) {
  const value = e.target.value
  if (!value) {
    setCurrentPage(1)
    currentList.value = icons
    return
  }
  currentList.value = icons.filter((item) => item.includes(value))
}
</script>
<style lang="less">
@prefix-cls: ~'@{namespace}-icon-picker';

.@{prefix-cls} {
  .ant-input-group-addon {
    padding: 0;
  }

  &-popover {
    width: 300px;

    .ant-popover-inner-content {
      padding: 0;
    }

    .scrollbar {
      height: 220px;
    }
  }
}
</style>
